Super Duplex Stainless Steel 2507 Pipe: supplier, stockist and exporter in Mumbai, India
Rajgranth Metal & Alloys supplies super duplex stainless steel 2507 pipe (UNS S32750) from Mumbai and exports it to 18 markets.
What is Super Duplex 2507 pipe?
Pipe is sized by nominal bore and schedule and is made to carry fluid or to act as structural section. Super Duplex 2507 pipe is supplied welded or seamless depending on the duty: welded for general and larger-diameter lines, seamless where there must be no weld seam or the design code requires it. Super Duplex 2507 (UNS S32750, EN 1.4410) is a high-alloy duplex stainless steel with 25 percent chromium, 7 percent nickel, 4 percent molybdenum and nitrogen. Its pitting resistance equivalent is above 40, which puts it in the seawater and aggressive chloride class.
Rajgranth Metal & Alloys lists Super Duplex 2507 among the grades it supplies and exports from Mumbai.
Super Duplex 2507 designations and equivalents
| Standard | Designation |
|---|---|
| UNS | S32750 |
| EN / Werkstoff | 1.4410 |
| Also called | 2507, S32750 |
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Super Duplex 2507 chemical composition
Limits are those of the standard named in the table caption. Product-specific standards for pipe, tube and bar carry their own limits, so always confirm the composition on the mill test certificate supplied with the material.
| Element | Carbon | Manganese | Silicon | Phosphorus | Sulphur | Chromium | Nickel | Molybdenum | Copper | Nitrogen |
|---|---|---|---|---|---|---|---|---|---|---|
| Limit | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 6.00 – 8.00 | 3.00 – 5.00 | 0.50 max | 0.24 – 0.32 |
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Super Duplex 2507 mechanical properties
| Property | Requirement |
|---|---|
| Tensile strength | 795 MPa minimum |
| Yield strength (0.2% offset) | 550 MPa minimum |
| Elongation in 50 mm | 15% minimum |
| Hardness | 32 HRC maximum (310 HBW) |
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Super Duplex 2507 pipe: sizes and finishes
The published size range, finishes and conditions for pipe are set out on the seamless pipes and welded pipes pages, which list every dimension we publish. Sizes outside the range can be produced to order; send the dimensions with your enquiry.
| Parameter | Range |
|---|---|
| Seamless Pipes: Outside diameter | 10.3 to 609.6 (mm) |
| Seamless Pipes: Nominal bore | 1/8″ NB, 40″ NB (1/4″ to 24″ held as primary stock range) |
| Seamless Pipes: Schedule | SCH 5 to SCH XXS |
| Seamless Pipes: Wall thickness | 0.71 to 8.0 (SWG, mm) |
| Seamless Pipes: Length | 5 m, 6.5 m (Customised up to 12 m per requirement) |
| Seamless Pipes: Pipe ends | Plain, Bevelled |
| Seamless Pipes: Marking | Size, Grade, Specification, Heat number |
| Welded Pipes: Outside diameter | 10.3 to 609.6 (mm) |
| Welded Pipes: Schedule | SCH 5 to SCH XXS |
| Welded Pipes: Wall thickness | 0.71 to 8.0 (SWG, mm) |
| Welded Pipes: Length | 5 m, 6.5 m (Customised up to 12 m per requirement) |
| Welded Pipes: Pipe ends | Plain, Bevelled |
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Standards for Super Duplex 2507 pipe
Super Duplex 2507 pipe is commonly specified to ASTM A790 / ASME SA-790 and ASTM A928. Commonly specified product standards. Confirm the standard, edition and any supplementary requirements on your order; we supply to the standard you name.
Why buyers choose Super Duplex 2507 pipe
Very high strength, with a 550 MPa minimum yield strength
PREN above 40 for seawater and chloride service
Good resistance to stress corrosion cracking
Where Super Duplex 2507 pipe is used
- Subsea and offshore oil and gas piping
- Seawater cooling and firewater systems
- Desalination high-pressure pipework
- Heat exchangers in chloride service
- Chemical process equipment
What to state when you enquire for Super Duplex 2507 pipe
- Nominal bore and schedule, or outside diameter and wall thickness
- Seamless or welded
- Length, with 5 m to 6.5 m the published stock range and longer to order
- End condition: plain or bevelled
- Surface condition: annealed and pickled, bright annealed or polished
- The standard, and the test certificate required
What to check on Super Duplex 2507 pipe before and after delivery
On Super Duplex 2507 pipe check the wall thickness against the schedule, the end preparation, and the heat number against the mill test certificate. For welded pipe, ask whether the weld seam has been dressed if the pipe is for exposed or polished use. Confirm that the pressure rating and design code your line is built to accept the grade and the pipe standard. Grade limits to design around: not for continuous service above about 250 degrees C and needs qualified welding procedures and control of heat input.
Export of Super Duplex 2507 pipe from India
Super Duplex 2507 pipe is exported from Mumbai to 18 confirmed markets, quoted with the Incoterm and named port.
Super Duplex 2507 compared with similar grades
Buyers who look at Super Duplex 2507 pipe usually also compare Duplex 2205 and Super Duplex S32760. The grade pages below give each one's designations, properties and limits side by side so you can choose for the service rather than the price alone.
FAQ
09Questions answered
- What does PREN above 40 mean?
- PREN is a ranking figure for pitting resistance from chromium, molybdenum and nitrogen content. Above 40 is the usual threshold for grades called super duplex.
- How does 2507 compare with 2205?
- 2507 has more chromium, molybdenum and nitrogen, so it resists chlorides better and is stronger, at a higher price.
- Is super duplex difficult to weld?
- It needs qualified procedures and controlled heat input to keep the phase balance, but it is routinely welded in offshore fabrication.
- What is the difference between Super Duplex 2507 pipe and tube?
- Pipe is specified by nominal bore and schedule, which fixes the wall for each size. Tube is specified by actual outside diameter and wall thickness. If you have an outside diameter and a wall, you are normally buying tube.
- Which standard applies to Super Duplex 2507 pipe?
- Super Duplex 2507 pipe is commonly specified to ASTM A790 / ASME SA-790 and ASTM A928. Confirm the standard and edition on your order.
- What is the minimum yield and tensile strength of Super Duplex 2507?
- In the annealed condition, Super Duplex 2507 has a minimum yield strength of 550 MPa and a minimum tensile strength of 795 MPa, per the standard named in the table above.
- What is the UNS number and EN designation of Super Duplex 2507?
- Super Duplex Stainless Steel 2507 is designated UNS S32750 and EN 1.4410, and is also called 2507 and S32750.
- What are the main alloying elements in Super Duplex 2507?
- To the standard in the composition table, Super Duplex 2507 carries chromium 24.00 – 26.00, nickel 6.00 – 8.00 and molybdenum 3.00 – 5.00 percent by weight. Confirm the composition on the mill test certificate supplied with your material.
- Do you supply a mill test certificate with Super Duplex 2507 pipe?
- Yes, to EN 10204 3.1 as standard, showing chemistry and mechanical properties against the heat. EN 10204 3.2 with third-party inspection is available on request.
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